07 March 2018 Challenges of Multi Band/Multi Technology Cellular installation Kathrein/Deltronic Telecom Infra Event, Rotterdam, 7 th March 2018
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1. Trends in Mobile Communication Industry 3
Data tsunami the world is changing Papal Election 2005 Papal Election 2013 4
Trends: Multi-Array / Multi-Band Antennas Increased need for Multiband Antennas Permission for additional sites in Europe is hard to get Operators normally have more than one license Acceptance of new antennas on sites decreases Source: ABIResearch KATHREIN's Multiband Antenna Portfolio for LTE covers all bands Compact design with high integration independant Remote Electrical Tilt Source: ABIResearch 5
Network Vision 2022 Urban Area 3D Coverage Broadcast via GEO SAT xmimo FttC/DOCSIS 3.1/R-Phy Connected Car/Car2X Edge Computing BOSNET/ TETRA/ Project 25 Urban areas will serve the most use cases with the latest technologies installed. Street Connect/Densification D2D/Mesh Network Inside Connect Indoor Coverage 6
2. Antenna Trends 7
HISTORY Antenna Complexity Limited number of available network opportunities e.g. GSM 900 900 Operator 1 GSM 900 Extended Lowband AISG Colour Code XPol Panel 790 960MHz Lowband array 8
PRESENT Antenna Complexity Growing number of different frequency ranges for Mobile Communication Systems e.g. GSM900 GSM1800 UMTS 2100 LTE 700.. 2600 Operator 1 700 800 900 1800 2100 2600 LTE GSM / UMTS GSM UMTS LTE Demand: different bands in one antenna Solution: create multi-band antennas with different antenna arrays Radome LB Array 698/790 960 MHz HB Array 1710 2170 MHz HB Array UBB 1695 2690 MHz 9
Antenna Complexity Upgrades / Expansions From 2RxDiv to 4RxDiv From 2 x 2 MIMO to 4 x n MIMO 8 x n MIMO? New licence new requirements on site Mulit-Array, Ultra-Broadband Kathrein Design = Superintegration Future-proof roll-out = no additional CAPEX and OPEX Less wind load + weight = lower CAPEX 790-960 1710-2170 698-960 1695-2690 10
Kathrein L-Band 14-Port Antenna FlexRET L-Band 4.3-10 698-862 880-960 1695-2180 2490-2690 1427-1518 1695-2180 2490-2690 80011878 1Q18 698-862 (R1) 880-960 (R2) 1695-2180 (B1) 2490-2690 (Y1) 1427-1518 (G1) 1695-2180 (B2) 2490-2690 (Y2) 16 dbi 16 dbi 17.5 dbi 17.5 dbi 17 dbi 17.5 dbi 18 dbi 65 65 65 65 65 65 65 2-12 T 2-12 T 2.5-12 T 2.5-12 T 2.5-12 T 2.5-12 T 1999 / 378 / 164 mm MIMO Correlation Table 698-862 880-960 1695-2180 2490-2690 1695-2180 2490-2690 1427-1518 2 x 2 x x x x x x x 4 x 4 x x x x 11
What about PIM in a Single Radome solution? Lowband: problem with filtered lowband solution, one must combine 700 and 800 possible PIM right away also, filtered lowband means that all lowband carriers are combined after the diplexer Proposal: split up lowbands in two columns OR don t use 800 MHz band! 12
3. Network Quality 13
Intermodulation distance of -150 dbc Δ 150 db = 10 15 10 * distance earth to sun diameter pinhead = 10 15 = 150 db Diameter pinhead: ~1,5 mm Distance earth to sun: ~150 Mio km earth sun 14
Intermodulation What are the results of bad PIM performance? Interference respectively SNR is dependent on PIM, tilt accuracy, HPBW,.. Low SNR end up in less data throughput [Source: Ericsson] 15
CrossPolarRatio - CPR Bad CPR bad receive diversity and MIMO performance Recommendation: 8-10 db within sector [2] 16
CPR CrossPolarRatio directly influences the network performance The higher the CPR, the higher the Div-Gain 17
Examples for IM causes Antenna environment 18
698 960 1695 2700 3500 1350-1527??? Challenges for the Future Recognize trends New Frequency usage, e.g. 3.5 GHz for LTE Combination of TDD / FDD systems Supplemental Downlink 5 G Ultra High Frequencies?? Which frequency combinations in one radome? Small Cell configurations Super integrated 16 port passive plus 3.5GHz mmimo 19
istock.com Kenishirotie Stay Connected Thank you very much for your attention! Any questions? 20